Review the smart bulbs Mfr setup information. Orbi doesn't support separating SSIDs between the frequencies. If the devices only support 2.4Ghz, they won't try to connect to a 5Ghz SSID. Not possible. The Mfr of these devices needs to ensure there products work on wireless MESH systems that use Smart Connect and use only one SSID and PW for devices to connect too. This is probably a issue with your setup mobile device being on 5Ghz and the smart device only supports 2.4Ghz. The Mfrs setup software/drivers should be allowing the setup mobile device to be connected to either frequency during setup of the Smart device. Mfrs are not doing this for some reason when they should be.